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FromTheMoon [43]
3 years ago
14

Simplify 2 1/3 + 1 3/10 - 3 2/15

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
5 0

Answer:

7

Step-by-step explanation:

2 x 1/3 + 1 x 3/10 - 3 x 2/15

Multiplying each Side by the LCM which is 30

u will get 10 (2x1) + 3 (1x3) - 2 (3x2)

10(2) + 3(3) - 2(6)

20 + 9 -12

19 -12

7

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If D-M-G, DM=2x , MG= x-2 , and DG= 7 , find x
Dmitrij [34]

Step-by-step explanation:

DG is the total measurement of the line. M is a point inbetween D & G

2x + x - 2 = 7

Simplify. Combine likke terms

(2x + x) - 2 = 7

3x - 2 = 7

Isolate the x. First, add 2 to both sides

3x - 2 (+2) = 7 (+2)

3x = 9

Isolate the x. Divide 3 from both sides

(3x)/3 = (9)/3

x = 9/3

x = 3

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3 is your answer for x

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~<em>Where the Good Way Lies, Hope Unfolds</em>

4 0
4 years ago
It has been decided that 100 people need to be surveyed to decide the publics opinion on a school building project. A student su
Morgarella [4.7K]

Answer:

The proposed way of sampling is a biased way to perform the survey.

Step-by-step explanation:

Convenience sampling is a kind of non-probability sampling method that comprises of the sample being taken from that portion of the population that is near to hand.  In this type of sampling method, all items doesn’t have an equivalent chance of being selected, which doesn’t comprises of random collection of items.

Convenience sampling is where we take in items which are easy to reach.

Convenience sampling consists of selection bias, i.e.e the bias involved in the sample due to inappropriate selection procedures.

For example, randomly selecting 4 people sitting near him to guesstimate the mean age of the class is a convenience sampling example. or gathering information on customer satisfaction by interviewing 6 randomly selected customers from a local store is an illustration of convenience sampling.

In this case, the sample suggested by the students consists of surveying the first 100 people who enter the school, about the public opinion on a school building project.

This is an example of convenience sample.

So, there is a selection bias present in the sample.

Thus, the proposed way of sampling is a biased way to perform the survey.

4 0
4 years ago
Mary measured the heights of two different plants every day. Plant A was 1 inch tall when
seropon [69]

The heights of plant A and plant B will be equal on the day 8.

<h3>How to find the heights of the trees?</h3>

The height of the tree can be found as follows:

The equation for plant A can be described as follows:

y = 1 + 0.5x

where

x = number of days

y = height

The equation for plant B can be described as follows:

y = 3 + 0.25x

Therefore, for the height to be equal

1 + 0.5x =  3 + 0.25x

1 - 3 = 0.25x  - 0.5x

-2 = -0.25x

x = 2 / 0.25

x = 8 days

learn more on height here: brainly.com/question/16959984

#SPJ1

7 0
2 years ago
Pizzazz HELP MEEEE
Art [367]

Answer:

8x less than or equal to $50

Step-by-step explanation:

bc the x represents the amount of books you can get for 8 dollars per book and can be less than or equal to, but not greater than 50, the max amount you may spend

hope this helped :)

4 0
3 years ago
Simplify the expression to a + bi form:<br> (-6 - 9i)(-11 + 7i)
jek_recluse [69]

Answer:

129+57i

Step-by-step explanation:

4 0
3 years ago
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